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PURL Data Collection
Apr 19, 2021
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PURL domain: /novoa
Topic: purl_data_md
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The conference proceedings deal with aircraft air supplies in current large passenger transport aircraft. Apart from the Boeing 787, all passenger aircraft utilize nonfiltered air (bleed air) drawn from the compressor stage of turbine engines to provide pressurization and breathing air. This design has been utilized since the 1950s and 60s. Synthetic jet engine oils and other fluids in aircraft systems are recognized and known to contaminate the bleed air supply, impacting flight safety,...
Topics: Aeronautics, Aeronautics, Airplanes, Air--Pollution, Aircraft, Cabins, cabin, air, cabin air, ECS,...
The International Aircraft Cabin Air Conferences are developing into a series of conferences organized every two years. The conferences are mapping the business, regulatory and technical solutions to aircraft cabin air contamination. The conferences in 2017 and 2019 provided networking opportunities for those seeking to understand the subject of contaminated air, the flight safety implications, the latest scientific and medical evidence investigating the contaminated air debate and the...
Topics: Aerospace, Aeronautics, Airplanes, Air--Pollution, Aircraft, Cabins, cabin, air, cabin air, ECS,...
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Following the successful initial Special Issue on “Aircraft Design (SI-1/2017)”, this is already the second SI “Aircraft Design (SI-2/2020)”. Activities in the past showed that aircraft design may be a field too small to justify its own (subscription-based) journal. A continuous open access special issue may fill the gap. As such, the Special Issue “Aircraft Design” can be a home for all those working in the field who regret the absence of an aircraft design journal. SI-2/2020...
Topics: aerospace, aviation, aeronautics, airplanes, aircraft, design, publishing, open access, special...
PURL Data Collection
Jun 6, 2020
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PURL domain: /corona
Topic: purl_data_md
Zweck - Von Piloten werden u.a. die sogenannten "Manual Flying Skills" gefordert. Dabei muss der Pilot in der Lage sein (ohne Autopiloten) nach grundlegenden Instrumenten zu fliegen. Dafür sind neben Geschick auch Faustformeln erforderlich. Die Faustformeln müssen dafür verlässlich sein. Der Inhalt dieser Arbeit beschäftigt sich exemplarisch mit einer Faustformel zur Umrechnung der kalibrierten Fluggeschwindigkeit (Calibrated Airspeed, CAS) in die wahre Fluggeschwindigkeit (True...
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Fluggeschwindigkeit, Flughöhe, Fluggeschwindigkeit,...
Folkscanomy: General Academic Papers
Feb 18, 2020 Desenfans, Philip
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Purpose - The paper presents a theoretical framework that describes the aerodynamics of a falling maple (Acer pseudoplatanus) seed. --- Methodology - A semi-empirical method is developed that provides a ratio stating how much longer a seed falls in air compared to freefall. The generated lift is calculated by evaluating the integral of two-dimensional airfoil elements using a preliminary falling speed. This allows for the calculation of the definitive falling speed using Blade Element Momentum...
Topics: Aerodynamik, Ahorn, Auftrieb, Strömungsabriss, Samen, Evolutionsbiologie, Maple, aerodynamics,...
Folkscanomy: General Academic Papers
Feb 14, 2020 Benegas Jayme, Diego
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Purpose - This master thesis evaluates the hybrid-electric aircraft project E-Fan X with respect to its economical and environmental performance in comparison to its reference aircraft, the BAe 146-100. The E-Fan X is replacing one of the four jet engines of the reference aircraft by an electric motor and a fan. A turboshaft engine in the cargo compartment drives a generator to power the electric motor. --- Methodology - The evaluation of this project is based on standard aircraft design...
Topics: Luftfahrt, Luftfahrzeug, Elektroantrieb, Flugmechanik, Betriebskosten, Kraftstoffverbrauch,...
Purpose - This thesis presents a comparison of aircraft design concepts to identify the superior propulsion system model among turbo-hydraulic, turbo-electric and classic jet propulsion with respect to Direct Operating Costs (DOC), environmental impact and fuel burn. --- Approach - A simple aircraft model was designed based on the Top-Level Aircraft Requirements of the Airbus A320 passenger aircraft, and novel engine concepts were integrated to establish new models. Numerous types of propulsion...
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Betriebskosten, Ölhydraulik, Elektroantrieb,...
Purpose – Find optimal flight and design parameters for three objectives: minimum fuel consumption, Direct Operating Costs (DOC), and environmental impact of a passenger jet aircraft. --- Approach – Combining multiple models (this includes aerodynamics, specific fuel consumption, DOC, and equivalent CO2 mass) into one generic model. In this combined model, each objective's importance is determined by a weighting factor. Additionally, the possibility of further optimizing this model by...
Topics: Luftfahrt, Flugzeugaerodynamik, Flugmechanik, Betriebskosten, Flugzeug, Flugtriebwerk,...
Folkscanomy: General Academic Papers
Feb 11, 2020 De Grave, Emiel
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This thesis explains how the classified design parameters of existing passenger jets can be determined. The classified design parameters are; the maximum lift coefficient for landing and take-off, the maximum aerodynamic efficiency and the specific fuel consumption. The entire concept is based on the preliminary sizing of jet powered civil aeroplanes. This preliminary sizing is explained in detail because it is the foundation of the final result. The preliminary sizing is combined using reverse...
Topics: Luftfahrt, Luftfahrzeug, Passagierflugzeug, Reverse Engineering, Luftfahrttechnik, Aerodynamik,...
Folkscanomy: General Academic Papers
Feb 6, 2020 Cheema, John Singh
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Zweck – In dieser Bachelorarbeit werden die öffentlich nicht zugänglichen Technologieparameter von Passagierflugzeugen näherungsweise bestimmt. Das sind maximaler Auftriebsbeiwert bei Start und Landung, maximale Gleitzahl und spezifischer Kraftstoffverbrauch im Reiseflug. Folgende Flugzeuge werden paarweise untersucht und verglichen: A340-300 und IL-96-300, Boeing 727-200 Advanced und TU-154M, Fokker 100 und MD-82, A319-100 und An-72. --- Methodik – Die Berechnung erfolgt mit dem...
Topics: Luftfahrt, Luftfahrt, Luftfahrzeug, Passagierflugzeug, Reverse Engineering, Luftfahrttechnik,...
PURL Data Collection
Jan 29, 2020
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PURL domain: /cabinair
Topic: purl_data_md
PURL Data Collection
Jan 17, 2020
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PURL domain: /scholz
Topic: purl_data_md
PURL Data Collection
Jan 16, 2020
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PURL domain: /aerolectures
Topic: purl_data_md
PURL Data Collection
Jan 16, 2020
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PURL domain: /aircraftdesign
Topic: purl_data_md
PURL Data Collection
Jan 16, 2020
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PURL domain: /profscholz
Topic: purl_data_md
PURL Data Collection
Jan 16, 2020
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PURL domain: /aero
Topic: purl_data_md
Folkscanomy: General Academic Papers
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Reducing unscheduled maintenance is important for aircraft operators. There are significant costs if flights must be delayed or cancelled, for example, if spares are not available and have to be shipped across the world. This thesis describes three methods of aircraft health condition monitoring and prediction; one for system monitoring, one for forecasting and one combining the two other methods for a complete monitoring and prediction process. Together, the three methods allow organizations...
Topics: Luftfahrt, Luftfahrzeug, Instandhaltung, Maschinelles Lernen, Flugzeugsysteme, Wartung, airplanes,...
Folkscanomy: General Academic Papers
Sep 8, 2019 Lakies, Marcel
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In this report an equation is derived to calculate the dynamic effect of primary and secondary aircraft cabin air contamination. The equation is applied in order to understand implications and hazards. Primary contamination is from an outside source in form of normal low level contamination or high level contamination in a failure case. Secondary contamination originates from deposited material released into the cabin by a trigger event. The dynamic effect is described as an initial value...
Topics: Luftfahrt, Luftfahrzeug, Passagierflugzeug, Flugzeugkabine, aeronautics, airplanes, air--pollution,...
Folkscanomy: General Academic Papers
Apr 19, 2019 Gregorian, Hayk
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Purpose - This bachelor thesis compares high-speed rail (HSR) transport with air transport. The investigation considers physical fundamentals, energy consumption, environmental impact, infrastructure and investment, market situations, passenger's selection criteria to choose transportation options, and overall economics. --- Methodology - The thesis combines an investigation of physical principles with a literature review. --- Findings - Steel wheels on steel rails show by far less rolling...
Topic: Luftverkehr, Hochgeschwindigkeitszug, Umweltbelastung, Verkehrsmittelwahl, Luftfahrt, Flugmechanik,...
Kenntnisse über Parametereigenschaften und Charakteristiken von Flugzeugkomponenten sind eine wesentliche Grundlage für Methoden des Flugzeugentwurfs. Daher ist Ziel dieser Arbeit, statistische Merkmale und Kenngrößen einer für den Flugzeugbau und Entwurf relevanten Auswahl an Komponenten zu erschließen. Dabei wurden zunächst superkritische Tragflügelprofile hinsichtlich ihrer geometrischen Eigenschaften (relative Profildicke, Wölbung, Dickenrücklage, Wölbungsrücklage und der...
Topic: Luftfahrt, Luftfahrzeug, Flugzeugaerodynamik, Fahrwerk, aeronautics, airplanes, aerodynamics,...
Folkscanomy: General Academic Papers
Mar 5, 2019 Scholz, Dieter
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Purpose – This presentation takes a critical look at various electric air mobility concepts. With a clear focus on requirements and first principles applied to the technologies in question, it tries to bring inflated expectations down to earth. Economic, ecologic and social (noise) based well accepted evaluation principles are set against wishful thinking. --- Design/methodology/approach – Aeronautical teaching basics are complemented with own thoughts and explanations. In addition, the...
Topics: aeronautics, airplanes, flight, high speed trains, electric propulsion, evaluation, environmental...
Folkscanomy: General Academic Papers
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These are the Proceedings of the 11th European Workshop on Aircraft Design Education (in short: EWADE 2013). The workshop took place from 17. to 19.09.2013 in Linköping, Sweden. EWADE 2013 was for the first time integrated into the CEAS European Air & Space Conference. Location was the congress center located right in the heart of the city of Linköping. The workshop was organized by Prof. Dieter Scholz, Aircraft Design and Systems Group (AERO), Hamburg University of Applied Sciences, in...
Topics: aerospace, aeronautics, airplanes, aircraft, design, aircraft design, conceptual design,...
Folkscanomy: General Academic Papers
Mar 5, 2019 Scholz, Dieter; Fazelzadeh, S. Ahmad; Mazidi, Abbas; Friswell, Michael I.
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In this paper, the aeroelastic modeling and conceptual flutter analysis of a simple 2-D box wing is investigated. For each wing the torsion and bending elasticity is simulated by two torsional and longitudinal springs at its elastic axis. Furthermore, the connection winglet is simulated by a longitudinal spring. The aeroelastic governing equations are derived using Lagrange’s equations. Also, for aeroelastic loads simulation on the box wing, the Theodorsen aerodynamic model is used. The...
Topics: aeronautics, aerodynamics, aeroelasticity, airplanes, airplanes-wings, Luftfahrt,...
ProfScholz Favorites
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Mar 2, 2019
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ProfScholz Favorites
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Folkscanomy: General Academic Papers
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Zapfluft und Wellenleistung wird den Triebwerken entnommen, um die Energie für beispielsweise die Kraftstoffpumpen, das Inflight Entertainment oder die Flügelvorderkantenenteisung zu erzeugen. Diese Energiegenerierung, hat einen Anstieg des Kraftstoffverbrauches zur Folge. Es hat sich herausgestellt, dass die Stelle der Zapfluftentnahme einen starken Einfluss auf den Gradienten des Brennstoffverbrauches hat. Das Projekt beschäftigt sich mit zwei- und dreiwelligen Turbofantriebwerken und...
Topics: Luftfahrt, Luftfahrzeug, Flugtriebwerk, Sekundärenergie, aeronautics, aerospace engineering,...
Folkscanomy: General Academic Papers
Mar 1, 2019 Scholz, Dieter; Seresinhe, Ravinka; Staack, Ingo; Lawson, Craig
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This paper looks at fuel consumption due to shaft power off-takes from the engine and the related increase in the aircraft's fuel consumption. It presents a review and comparison of published and unpublished data on this kind of consumption. Insight is given into the effects caused by off-takes, looking at phenomena inside the engine when shaft power is extracted. The paper presents results from the TURBOMATCH engine simulation model, calibrated to real world engine data. Generic equations are...
Topics: Luftfahrt, Flugtriebwerk, Turboluftstrahltriebwerk, Kraftstoffverbrauch, Sekundärenergie,...
Folkscanomy: General Academic Papers
Feb 1, 2019 Budziak, Kinga
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This project evaluates the sutability and practicality of the program Athena Vortex Lattice (AVL) by Mark Drela. A short user guide was written to make it easier (especially for students) to get started with the program AVL. AVL was applied to calculate the induced drag and the Oswald factor. In a first task, AVL was used to calculate simple wings of different aspect ratio A and taper ratio lambda. The Oswald factor was calculated as a function f(lambda) in the same way as shown by HOERNER....
Topics: Luftfahrt, Luftfahrzeug, Flugzeugaerodynamik, Luftwiderstand, aeronautics, airplanes, aerodynamics,...
Folkscanomy: General Academic Papers
Feb 1, 2019 Burzlaff, Marcus
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In order to uncover the best kept secret in today’s commercial aviation, this project deals with the calculation of fuel consumption of aircraft. With only the reference of the aircraft manufacturer’s information, given within the airport planning documents, a method is established that allows computing values for the fuel consumption of every aircraft in question. The aircraft's fuel consumption per passenger and 100 flown kilometers decreases rapidly with range, until a near constant...
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Flugtriebwerk, aeronautics, airplanes,...
Folkscanomy: General Academic Papers
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Ziel – Die Zeit die ein Flugzeug benötigt, um auf eine bestimmte Höhe zu steigen (die Steigzeit) kann mit einer Formel berechnet werden, die vereinfachend annimmt, dass die Steiggeschwindigkeit über dem gesamten Steigflug mit zunehmender Höhe linear abnimmt. Ziel der Untersuchung ist, zu ermitteln, ob die Annahme einer linear abnehmenden Steiggeschwindigkeit realistisch ist bzw. welche Fehler sich aus der Annahme ergeben. ----- Methode – Mit der Höhe ändern sich Parameter wie...
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Flugtriebwerk, aeronautics, airplanes,...
Folkscanomy: General Academic Papers
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Diese Projektarbeit beschäftigt sich mit dem Thema der Berechnung des Betriebsleermassenanteils im Flugzeugentwurf. Bekannte Berechnungsverfahren nach Torenbeek, Raymer, Marckwardt und Loftin werden auf Qualität und Aktualität untersucht und miteinander verglichen. Im Vordergrund steht dabei die Frage, ob eine genauere Methode zur Ermittlung des Betriebsleermassenanteils auf Basis neuer Statistiken gefunden werden kann. Neben der Entwicklung einer neuen Berechnungsmethode wird außerdem auf...
Topics: Luftfahrt, Luftfahrzeug, Flugzeugbau, Singulärwertzerlegung, aeronautics, airplanes, aerospace...
Folkscanomy: General Academic Papers
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Diese Projektarbeit versucht zu erklären, warum Flugzeuge mit drei oder vier Triebwerken kaum noch verkauft werden. Dabei wird insbesondere der Vermutung nachgegangen, dass Flugzeuge mit einer größeren Anzahl an Triebwerken höhere Wartungskosten haben könnten. Zur Beantwortung der Frage werden sechs verschiedene Methoden zur Berechnung von Betriebskosten (Direct Operating Costs, DOC) von Passagierflugzeugen herangezogen, die u.a. auch die Kosten der Triebwerkswartung abschätzen. Vier...
Topics: Luftfahrt, Luftfahrzeug, Flugzeugbau, Instandhaltungskosten, aeronautics, airplanes, aerospace...
Folkscanomy: General Academic Papers
Jan 31, 2019 Bensel, Artur
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Purpose of this project is a) the evaluation of the Thrust Specific Fuel Consumption (TSFC) of jet engines in cruise as a function of flight altitude, speed and thrust and b) the determination of the optimum cruise speed for maximum range of jet airplanes based on TSFC characteristics from a). Related to a) a literature review shows different models for the influence of altitude and speed on TSFC. A simple model describing the influence of thrust on TSFC seems not to exist in the literature....
Topics: Luftfahrt, Luftfahrzeug, Flugmechanik, Flugtriebwerk, aeronautics, airplanes,...
Folkscanomy: General Academic Papers
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In dieser Projektarbeit geht es um die Abschätzung von Massen der Hauptbaugruppen großer ziviler Verkehrsflugzeuge (MTOM > 40 t), sowie um die Abschätzung der Betriebsleermasse. Die Projektarbeit analysiert die 2013 im Luftfahrttechnischen Handbuch (LTH) erschienene Massenschätzmethode MA 401 12-01 B von F. Dorbarth und vergleicht diese Methode mit anderen früher veröffentlichten Methoden, die von Fernandes da Moura bereits 2001 analysiert wurden. Für die Analyse werden...
Topics: Luftfahrt, Luftfahrzeug, Flugwerk, Tragflügel, aeronautics, airplanes, airframes,...
Folkscanomy: General Academic Papers
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The aim of this project is to uncover some selected peculiarities and secrets of aviation and to explain them clearly to the reader. The points listed are limited solely to commercial passenger aviation, but cover various independent topics such as the cabin, the aircraft systems, the airline and many more. The depth of the elaboration of the respective topic depends significantly on the complexity of the same. Depending on the situation, visualizations in the form of figures, tables and...
Topics: Luftfahrt, Luftfahrzeug, Flugzeugbau, Flugzeugaerodynamik, aeronautics, airplanes, aerospace...
Airbus : A350 Aircraft Characteristics – Airport and Maintenance Planning. Toulouse : Airbus, 2018 (Revision No. 4 - Jun 01/18)
Topics: aircraft, data, Airbus, A350
Community Data
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WebPlotDigitizer-4.1-win32-x64 Zip file with program
Topic: plot
Folkscanomy: General Academic Papers
Jun 30, 2018
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WebPlotDigitizer ----------------------- It is often necessary to reverse engineer images of data visualizations to extract the underlying numerical data. WebPlotDigitizer is a semi-automated tool that makes this process extremely easy. Web page: https://automeris.io/WebPlotDigitizer Source file for Windows: https://automeris.io/downloads/WebPlotDigitizer-4.1-win32-x64.zip
Topics: plot, data
Folkscanomy: General Academic Papers
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CeRAS CSR-01 (A320) Aircraft Data --- Propulsion System by IRL, RWTH Aachen
Topics: aircraft, data, propulsion
03.07.2017 Bundesverbandes der Deutschen Luftverkehrswirtschaft (BDL): "Deutsche Airlines waren 2016 mit nur 3.64 Liter Kerosin Pro 100 Personenkilometer unterwegs" Aktueller Klimaschutzreport des BDL. https://www.bdl.aero/de/presse/pressemitteilungen/2017/185/
Topics: climate, aircraft, passenger, kerosene, fuel, consumption